On 5/21/08, André Pouliot <[EMAIL PROTECTED]> wrote: > I'll try to do a summary between the 2 chip. Fist of all, the logic cell > value is a marketing number who should never be used. > The V5SX50T is a chip containing 288 dsp block who are 25*18 multiplier > with an adder and a accumulator as I understand it. There is 32640 LUT in > the V5 but those LUT are 6 input and not the 4 found in the previous fpga > generation. And it have 132 block ram of 36 kbites. > > The S3-4000 is a chip with 96 multiplier 18*18 and also 96 block ram of 18 > kbites. Also the chip contain 55312 LUT, the LUT are 4 entry. > So for the comparaison both chip are about equivalent in the logic area. > The spartan3 have more LUT but they are smaller the v5 have less but they > are bigger. But being bigger doesn't mean you will use less of them, because > depending of the logic the LUT is not always fully used. So for the LUT side > of thing I could call it even. For the dsp/multiplier or the ram the V5 is > the winner there is more of them and you don't have the exclusivity problem > found in Spartan3. For the speed probably the spartan3 logic is going to run > around 100MHz the V5 could probably get to 200Mhz. Also the spartan3 as more > IO available 630 against 480 for the V5. > > The remaining question is the price for each part. I would be ready to bet > that the spartan3 is cheaper. Also the fact that we have a board already > designed and tested for the spartan3.
Ok. So the 4000 isn't as hot as the V5. We also need to account for the RAM and other components on the board. -- Timothy Normand Miller http://www.cse.ohio-state.edu/~millerti Open Graphics Project _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
